feeling vs notion

feeling and notion both are nouns.

Word	Noun	Adjective	Verb	Adverb
feeling	Yes	No	No	No
notion	Yes	No	No	No

As nouns, feeling and notion are synonyms defined as:

Other synonyms of feeling include belief, impression, opinion.

feeling (noun)	notion (noun)
the experiencing of affective and emotional states	(usually plural) small personal articles or clothing or sewing items
an intuitive understanding of something	a general inclusive concept
a physical sensation that you experience	an odd or fanciful or capricious idea
the sensation produced by pressure receptors in the skin	a vague idea in which some confidence is placed
a vague idea in which some confidence is placed
the general atmosphere of a place or situation and the effect that it has on people